Yes it seems too be in the latest batch, I have read through many pages of reviews containing back and forth emails from Hubsan and users. Hubsan has had the engineering department address the issue and that is discussed on page 16 of the forum discussion below, page 17 has a user post a video of the RTH feature engaging and turning the aircraft back towards its take off location while holding an altitude. It seems to work properly now. Links and video below.